30 br chronographed with LT30 compared to H 4198

[JMayo]

Interesting new G2. It didn't miss a shot. Jim Clines 108's

This is the average of 4 shots after the 6 shown. (2 each hole) 100yds.
Poa is the orange 90° left & down from holes. Scope set too put them in the middle up & right.
Barrel heat makes them go up & R egg even more.

 

[Mulligan]

View attachment 1313719
Interesting new G2. It didn't miss a shot. Jim Clines 108's

This is the average of 4 shots after the 6 shown. (2 each hole) 100yds.
Poa is the orange 90° left & down from holes. Scope set too put them in the middle up & right.
Barrel heat makes them go up & R egg even more.

Is the velocity correct for the 35.0 of 4198?
CW

 

[JMayo]

I shot 2 strings here is the 2nd

 

[rjs1230]

Looks like you got the reloading part down Johnny , Nice

 

[gunsandgunsmithing]

View attachment 1313719
Interesting new G2. It didn't miss a shot. Jim Clines 108's

This is the average of 4 shots after the 6 shown. (2 each hole) 100yds.
Poa is the orange 90° left & down from holes. Scope set too put them in the middle up & right.
Barrel heat makes them go up & R egg even more.

Looks like tune to me. Close, but not quite there. JMO...with the lt30. Pretty big steps in powder charge when you look to be very close, in between. Again, JMHO.

 

[JMayo]

What does the shot 0.09 sec mean ?

I had already shot the LT 30 and came up with those loads to test again for accuracy . That's why there is such a jump in between loads.

This is the 1st time I've used a chronograph.
Getting more powder in them i's going to be hard. Crush crush with 35.6.

 

[Mulligan]

View attachment 1313743
I shot 2 strings here is the 2nd

Gotcha,
It looked like 35.0 gr of 4198 has a higher velocity then 35.6 gr of 4198.
Maybe I need to find my glasses?

Carry on
CW

 

[JMayo]

Gotcha,
It looked like 35.0 gr of 4198 has a higher velocity then 35.6 gr of 4198.
Maybe I need to find my glasses?

Carry on
CW

The thread is the difference of LT 30 & 4198 . Only one is marked 4198 .

 

[Dub]

Gotcha,
It looked like 35.0 gr of 4198 has a higher velocity then 35.6 gr of 4198.
Maybe I need to find my glasses?

Carry on
CW

that is what I see also 35.0 4198 - 3111
35.6 4198 - 3093

 

[JMayo]

ppl Only one is marked 4198.

The other 3 (no powder make written) is lt30.

Thread title is 30br LT 30 compared to 4198. Again only one 4198 to compare the LT 30's to

I Can explain it but i can't make you understand !

 

[Dub]

ok I get it now. sorry

 

[FNSafari]

I'd play around with the LT30 on either side of 34.6 gr in perhaps .2 grain intervals.

 

[JMayo]

Yeah going to STUFF 35.8.

Getting smoothe bolt closure is the concern... It's a pita to get the bullet to correct measurement.

Even with 20" drop tube.
I jokenly talk about using a punch and hammer to tap the powder down .002 ...

 

[46490]

Have any of you used and or heard of using H4350 in the 30BR?

 

[JimPag]

Johnny. You mean your having a hard time getting 35.7 of LT in your cases?

 

[JMayo]

@JimPag
Well the powder goes in with about an 8th to spare for the bullet. Seating isn't consistent due to the crush.
Takes more time to tap powder in and then seating bullet is place measure, tap measure, tap measure.


I deleted my post. It was a repeat of the one before.

 

[JimPag]

@JimPag
Well the powder goes in with about an 8th to spare for the bullet. Seating isn't consistent due to the crush.
Takes more time to tap powder in and then seating bullet is place measure, tap measure, tap measure.


I deleted my post. It was a repeat of the one before.

I started out back in 15 with 35.8 and then settled on 36.1 and still had a little room for more. I only had the first batch that came out Dec 2014 vintage. Is yours the same? I'm 3 of my rifles I was using 34.3, 34.5 and 34.5 of 4198 with the mouth of the south's 108's and I was avg 3095, 3100, and 3085 respectively. All 3 were Krieger's the 1st 2 17's the last an 18tw all about 23".

 

[JMayo]

I started out back in 15 with 35.8 and then settled on 36.1 and still had a little room for more.

I was told 30br's don't mind if you level powder off then crushed bullet in .

Bullet needs half the neck

 

[JimPag]

This is from my CM Rimrock BR one of 6 made with a 18TW Krieger. That one on the top right hand side I tried Win SR primers and the group opened up. I can't understand why Winchesters never worked for me since 70% of the guy's up here use Win primers. Never had any luck with them. I remember watching Dean load his cases with a Neil Jones powder measure. 36 of N130 almost to the top and he was crushing every bullet that he seated and we all know that Dean is the man as far as score shooting goes.

 

[JimPag]

Johnny. This is 37.0 of LT30. I just have a std BR case nothing spcl. 1.540 chamber for this reamer.